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1 // Matrix manipulations. |
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2 /* |
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3 |
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4 Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005, |
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5 2006, 2007 John W. Eaton |
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6 |
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7 This file is part of Octave. |
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8 |
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9 Octave is free software; you can redistribute it and/or modify it |
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10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation; either version 3 of the License, or (at your |
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12 option) any later version. |
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13 |
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14 Octave is distributed in the hope that it will be useful, but WITHOUT |
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with Octave; see the file COPYING. If not, see |
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21 <http://www.gnu.org/licenses/>. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include <cstring> |
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30 |
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31 #include <iostream> |
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32 #include <string> |
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33 |
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34 #include "lo-error.h" |
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35 #include "str-vec.h" |
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36 #include "mx-base.h" |
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37 #include "mx-inlines.cc" |
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38 |
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39 // charMatrix class. |
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40 |
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41 charMatrix::charMatrix (char c) |
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42 : MArray2<char> () |
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43 { |
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44 octave_idx_type nc = 1; |
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45 octave_idx_type nr = 1; |
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46 |
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47 resize (nr, nc); |
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48 |
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49 elem (0, 0) = c; |
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50 } |
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51 |
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52 charMatrix::charMatrix (const char *s) |
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53 : MArray2<char> () |
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54 { |
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55 octave_idx_type nc = s ? strlen (s) : 0; |
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56 octave_idx_type nr = s && nc > 0 ? 1 : 0; |
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57 |
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58 resize (nr, nc); |
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59 |
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60 for (octave_idx_type i = 0; i < nc; i++) |
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61 elem (0, i) = s[i]; |
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62 } |
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63 |
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64 charMatrix::charMatrix (const std::string& s) |
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65 : MArray2<char> () |
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66 { |
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67 octave_idx_type nc = s.length (); |
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68 octave_idx_type nr = nc > 0 ? 1 : 0; |
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69 |
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70 resize (nr, nc); |
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71 |
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72 for (octave_idx_type i = 0; i < nc; i++) |
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73 elem (0, i) = s[i]; |
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74 } |
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75 |
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76 charMatrix::charMatrix (const string_vector& s) |
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77 : MArray2<char> (s.length (), s.max_length (), 0) |
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78 { |
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79 octave_idx_type nr = rows (); |
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80 |
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81 for (octave_idx_type i = 0; i < nr; i++) |
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82 { |
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83 octave_idx_type nc = s[i].length (); |
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84 for (octave_idx_type j = 0; j < nc; j++) |
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85 elem (i, j) = s[i][j]; |
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86 } |
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87 } |
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88 |
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89 bool |
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90 charMatrix::operator == (const charMatrix& a) const |
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91 { |
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92 if (rows () != a.rows () || cols () != a.cols ()) |
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93 return 0; |
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94 |
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95 return mx_inline_equal (data (), a.data (), length ()); |
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96 } |
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97 |
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98 bool |
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99 charMatrix::operator != (const charMatrix& a) const |
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100 { |
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101 return !(*this == a); |
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102 } |
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103 |
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104 charMatrix& |
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105 charMatrix::insert (const char *s, octave_idx_type r, octave_idx_type c) |
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106 { |
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107 if (s) |
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108 { |
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109 octave_idx_type s_len = strlen (s); |
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110 |
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111 if (r < 0 || r >= rows () || c < 0 || c + s_len - 1 > cols ()) |
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112 { |
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113 (*current_liboctave_error_handler) ("range error for insert"); |
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114 return *this; |
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115 } |
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116 |
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117 for (octave_idx_type i = 0; i < s_len; i++) |
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118 elem (r, c+i) = s[i]; |
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119 } |
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120 return *this; |
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121 } |
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122 |
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123 charMatrix& |
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124 charMatrix::insert (const charMatrix& a, octave_idx_type r, octave_idx_type c) |
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125 { |
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126 Array2<char>::insert (a, r, c); |
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127 return *this; |
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128 } |
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129 |
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130 std::string |
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131 charMatrix::row_as_string (octave_idx_type r, bool strip_ws, bool raw) const |
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132 { |
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133 std::string retval; |
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134 |
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135 octave_idx_type nr = rows (); |
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136 octave_idx_type nc = cols (); |
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137 |
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138 if (r == 0 && nr == 0 && nc == 0) |
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139 return retval; |
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140 |
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141 if (r < 0 || r >= nr) |
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142 { |
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143 (*current_liboctave_error_handler) ("range error for row_as_string"); |
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144 return retval; |
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145 } |
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146 |
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147 retval.resize (nc, '\0'); |
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148 |
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149 for (octave_idx_type i = 0; i < nc; i++) |
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150 retval[i] = elem (r, i); |
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151 |
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152 if (! raw) |
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153 { |
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154 if (strip_ws) |
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155 { |
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156 while (--nc >= 0) |
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157 { |
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158 char c = retval[nc]; |
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159 if (c && c != ' ') |
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160 break; |
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161 } |
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162 } |
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163 else |
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164 { |
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165 while (--nc >= 0) |
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166 if (retval[nc]) |
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167 break; |
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168 } |
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169 |
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170 retval.resize (nc+1); |
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171 } |
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172 |
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173 return retval; |
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174 } |
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175 |
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176 charMatrix |
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177 charMatrix::extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const |
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178 { |
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179 if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; } |
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180 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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181 |
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182 octave_idx_type new_r = r2 - r1 + 1; |
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183 octave_idx_type new_c = c2 - c1 + 1; |
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184 |
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185 charMatrix result (new_r, new_c); |
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186 |
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187 for (octave_idx_type j = 0; j < new_c; j++) |
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188 for (octave_idx_type i = 0; i < new_r; i++) |
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189 result.elem (i, j) = elem (r1+i, c1+j); |
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190 |
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191 return result; |
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192 } |
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193 |
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194 charMatrix |
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195 charMatrix::diag (void) const |
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196 { |
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197 return diag (0); |
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198 } |
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199 |
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200 charMatrix |
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201 charMatrix::diag (octave_idx_type k) const |
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202 { |
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203 octave_idx_type nnr = rows (); |
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204 octave_idx_type nnc = cols (); |
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205 if (k > 0) |
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206 nnc -= k; |
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207 else if (k < 0) |
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208 nnr += k; |
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209 |
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210 charMatrix d; |
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211 |
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212 if (nnr > 0 && nnc > 0) |
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213 { |
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214 octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc; |
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215 |
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216 d.resize (ndiag, 1); |
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217 |
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218 if (k > 0) |
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219 { |
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220 for (octave_idx_type i = 0; i < ndiag; i++) |
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221 d.xelem (i) = elem (i, i+k); |
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222 } |
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223 else if (k < 0) |
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224 { |
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225 for (octave_idx_type i = 0; i < ndiag; i++) |
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226 d.xelem (i) = elem (i-k, i); |
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227 } |
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228 else |
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229 { |
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230 for (octave_idx_type i = 0; i < ndiag; i++) |
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231 d.xelem (i) = elem (i, i); |
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232 } |
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233 } |
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234 else |
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235 (*current_liboctave_error_handler) |
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236 ("diag: requested diagonal out of range"); |
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237 |
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238 return d; |
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239 } |
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240 |
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241 // FIXME Do these really belong here? Maybe they should be |
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242 // in a base class? |
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243 |
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244 boolMatrix |
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245 charMatrix::all (int dim) const |
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246 { |
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247 MX_ALL_OP (dim); |
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248 } |
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249 |
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250 boolMatrix |
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251 charMatrix::any (int dim) const |
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252 { |
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253 MX_ANY_OP (dim); |
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254 } |
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255 |
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256 MS_CMP_OPS(charMatrix, , char, ) |
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257 MS_BOOL_OPS(charMatrix, char, 0) |
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258 |
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259 SM_CMP_OPS(char, , charMatrix, ) |
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260 SM_BOOL_OPS(char, charMatrix, 0) |
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261 |
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262 MM_CMP_OPS(charMatrix, , charMatrix, ) |
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263 MM_BOOL_OPS(charMatrix, charMatrix, 0) |
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264 |
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265 /* |
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266 ;;; Local Variables: *** |
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267 ;;; mode: C++ *** |
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268 ;;; End: *** |
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269 */ |
